Mastering the Art of Persuasion

According to Webster's Dictionary, manipulation is
the act of using any means necessary to force a person to do
something that fulfills your needs, whether or not it's in his
or her best interest. Persuasion is the art of guiding someone
through a logical progression of thoughts so that he may arrive at
a conclusion that complements your views but is also in his own
best interest. Persuasion enables other people to understand what
you're saying and what you're feeling, and it motivates
them to do what you believe is in their best interest.